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    Abrasive Discs
    1. Home
    2. Abrasives
    3. Abrasive Discs
    Item # DY79887 • Mfr # 79887

    Dynabrade DynaCut Extreme Hook & Loop Sanding Disc 5" 320 Grit Aluminum Oxide Film No Hole 50 Discs-Pack 79887

    Description

    Dynabrade DynaCut Extreme Sanding Disc For Fine Work

    Dynabrade DynaCut Extreme 5 inch sanding disc uses premium P graded aluminum oxide abrasive, so each disc cuts aggressively while staying consistent across the surface, which helps produce predictable finishes job after job. The 320 grit rating positions this disc for fine sanding and finish prep, giving cabinet and woodworking projects a smooth surface ready for the next step. An aluminum oxide on film construction combines sharp abrasive grains with a stable base, so the disc resists wear while keeping the cut uniform. The scalloped edge design allows the disc to feather more gently at the perimeter, which helps blend edges and reduces visible swirl marks along profiles and transitions. This disc is part of the Dynabrade DynaCut Extreme line, giving installers and shop users an abrasive option aimed at fast cut and long life on compatible hook and loop backing pads.

    Key Sanding Disc Details That Save Time

    • The premium P graded aluminum oxide abrasive is manufactured for fast cut and long life, so sanding progresses quickly while discs stay usable across more surfaces before replacement.
    • The extremely tough and tear resistant high performance 3 mil film backing supports the abrasive layer, so discs hold together under pressure and edge use, helping maintain a consistent finish over the full disc face.
    • The proprietary clog free coating is pigment free and provides a build-up resistant abrasive surface, so loading from dust is reduced and the disc continues to cut instead of glazing over.
    • The hook and loop attachment system makes disc changes quick and easy, so switching grits or swapping discs during a job takes minimal downtime at the sander.
    • The hook and loop design also allows discs to be saved for future use when not completely worn, so partially used grits can be reused on later projects instead of being discarded.

    Hook And Loop Sanding Disc Mounting Workflow

    The 5 inch 320 grit hook and loop sanding disc uses a hook and loop attachment system, so it mounts directly to compatible hook and loop backing pads without tools, supporting quick swaps between steps. This system lets installers move from aggressive sanding to finer finishing simply by lifting one disc and pressing on another, which keeps the sander in hand and production moving. The no hole layout gives a full abrasive face across the disc, so the entire surface contributes to material removal and finish refinement where vacuum extraction patterns are not required. With aluminum oxide on film construction and a scalloped edge, the disc stays flat across the pad while the perimeter flexes more gently, which helps maintain contact in corners, along edges, and over profiles.

    Where This Abrasive Disc Fits Into Your Work

    Using The 3 Mil Film Backed Disc On Jobs

    The aluminum oxide on film sanding disc uses an extremely tough and tear resistant high performance 3 mil film backing, so it stays stable during extended passes across panels and frames. That backing supports the premium P graded aluminum oxide abrasive, which is specified for fast cut and long life, so the same disc can move across multiple components while still delivering a fine 320 grit scratch pattern. The scalloped edge shape lets the outer edge flex slightly around contours and along inside corners, which helps reduce sharp edge lines and improves blending where flat discs can leave visible transitions. The proprietary clog free coating being pigment free and build-up resistant keeps sanding dust from bonding heavily to the surface, so the abrasive grains remain exposed longer and feel more consistent through the life of the disc.

    Why DynaCut Extreme Details Matter For Results

    The DynaCut Extreme designation identifies this disc as part of a high performance line built for fast cut and long life, so shops can use it where throughput and repeatable finishing are important. Because the premium P graded aluminum oxide abrasive is uniform, the 320 grit disc leaves a controlled scratch pattern that prepares wood or similar materials for later finishing steps without deep random scratches. The extremely tough and tear resistant high performance 3 mil film backing keeps the disc intact around the scalloped edge, so operators can work close to edges without the disc fraying prematurely. The proprietary clog free, pigment free coating keeps dust from building up into hard spots on the disc, which helps avoid streaks and uneven cutting across the workpiece. The hook and loop attachment system supports quick disc changes and allows saving partially used discs, which helps installers and fabricators organize their abrasives by remaining life and grit.

    Common Questions About This Dynabrade Sanding Disc

    What type of abrasive does this Dynabrade disc use?

    This Dynabrade DynaCut Extreme disc is manufactured with premium P graded aluminum oxide abrasives, so it delivers a fast, consistent cut and maintains performance across repeated sanding passes.

    How does the 3 mil film backing affect sanding performance?

    The extremely tough and tear resistant high performance 3 mil film backing supports the abrasive, so the disc resists tearing and keeps a uniform surface under pressure and along edges.

    What benefit does the clog free coating provide?

    The proprietary clog free, pigment free coating creates a build-up resistant surface, so dust does not load heavily on the disc and cutting action stays effective longer.

    How does the hook and loop system help during sanding?

    The hook and loop attachment system lets the disc attach and detach quickly, so changing grits or reusing partially worn discs fits smoothly into normal sanding workflow.

    What is the role of the scalloped edge on this disc?

    The scalloped edge on this sanding disc allows the perimeter to feather more gently, so transitions along edges and contours can be blended more smoothly.

    What grit and size is this Dynabrade DynaCut Extreme disc?

    This Dynabrade DynaCut Extreme sanding disc is 5 inches in diameter and 320 grit, so it suits fine sanding and finish preparation tasks where a smooth surface is needed.

    Select This Disc For Hook And Loop Fine Sanding

    The Dynabrade DynaCut Extreme 5 inch 320 grit hook and loop sanding disc pairs a premium P graded aluminum oxide abrasive with an extremely tough and tear resistant high performance 3 mil film backing, so it supports fast cut and long life on fine sanding tasks. A proprietary clog free, pigment free coating reduces build-up on the abrasive surface, which helps maintain cutting efficiency over more workpieces. The scalloped edge and no hole design work with hook and loop mounting to give installers and woodworkers a flexible disc that handles edges, profiles, and flat areas with consistent results.

    Diameter (in)
    5 in
    Attachment Type
    Hook and loop
    Grit
    320
    Hole Pattern
    No Hole
    Mineral
    Aluminum oxide
    Product Type
    Sanding Discs
    Vacuum Type
    Non-Vacuum
    Backing Weight
    Film
    Manufacturer Series
    DynaCut Extreme
    Supplier Pack Size
    1
    Sold In
    1
    Diameter (in)
    5 in
    Attachment Type
    Hook and loop
    Grit
    320
    Hole Pattern
    No Hole
    Mineral
    Aluminum oxide
    Product Type
    Sanding Discs
    Vacuum Type
    Non-Vacuum
    Backing Weight
    Film
    Manufacturer Series
    DynaCut Extreme
    Supplier Pack Size
    1
    Sold In
    1
    80100120150180220320400
    Dynabrade
    $45.20/Package
    Dynabrade DynaCut Extreme Hook & Loop Sanding Disc 5" 320 Grit Aluminum Oxide Film No Hole 50 Discs-Pack 79887
    Item# DY79887 / MFR Part # 79887
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